How to work with $_SERVER['QUERY_STRING']

Question

How to work with $_SERVER[\'QUERY_STRING\'] and pagination?

When my table is sorted by this link:

Answer 1

Don't use QueryString, just create a variable at the beginning of your script:

$pagerUrl = $_SERVER['PHP_SELF'].'?sort_name='.$_GET['sort_name']&sort=$_GET['sort'];

And use it in your link:

echo ''.$i.' ';